Where the sea is warmest in March

925 of 2,330 mapped beaches average 20 °C or more this month. Every figure is a measurement, not an estimate.

#	Beach	Country	Mar °C	Warmest month
1	Eighty Mile Beach	🇦🇺 Australia	30.8	Mar 30.8 °C
2	Cable Beach	🇦🇺 Australia	30.4	Mar 30.4 °C
3	Padang Beach	🇮🇩 Indonesia	29.9	May 30.1 °C
4	Mindil Beach	🇦🇺 Australia	29.9	Dec 30.8 °C
5	Air Manis beach	🇮🇩 Indonesia	29.9	May 30.1 °C
6	Lameroo Beach	🇦🇺 Australia	29.9	Dec 30.8 °C
7	Madale Beach	🇮🇩 Indonesia	29.9	Apr 30.1 °C
8	Batu Ferringhi	🇲🇾 Malaysia	29.8	Jun 30.5 °C
9	Dominical	🇨🇷 Costa Rica	29.8	Mar 29.8 °C
10	Pantai Carolina	🇮🇩 Indonesia	29.8	May 30.1 °C
11	Pak Meng beach	🇹🇭 Thailand	29.6	May 30.4 °C
12	Sungai Suci Beach	🇮🇩 Indonesia	29.6	May 30 °C
13	Angsana Beach	🇮🇩 Indonesia	29.5	Nov 29.9 °C
14	Plages de Moya	🇫🇷 France	29.5	Mar 29.5 °C
15	Sakouli	🇫🇷 France	29.5	Mar 29.5 °C
16	Pagatan Beach	🇮🇩 Indonesia	29.5	Apr 29.9 °C
17	Black Sand Beach	🇲🇾 Malaysia	29.5	May 30.5 °C
18	Tanjung Rhu	🇲🇾 Malaysia	29.5	May 30.5 °C
19	Tahiti plage	🇫🇷 France	29.5	Mar 29.5 °C
20	Cenang Beach	🇲🇾 Malaysia	29.5	May 30.4 °C
21	Plage du Préfet	🇫🇷 France	29.5	Mar 29.5 °C
22	Pantai Tengah	🇲🇾 Malaysia	29.5	May 30.4 °C
23	Railay Beach	🇹🇭 Thailand	29.4	May 30.3 °C
24	Alappuzha Beach	🇮🇳 India	29.4	Apr 30 °C
25	Azheekal Beach	🇮🇳 India	29.4	Apr 29.9 °C
26	Cherai Beach	🇮🇳 India	29.4	Apr 30 °C
27	Anse Lazio	🇸🇨 Seychelles	29.4	Apr 29.9 °C
28	Anse source d´argent	🇸🇨 Seychelles	29.4	Apr 29.9 °C
29	Fort Kochi beach	🇮🇳 India	29.4	Apr 30 °C
30	Marari Beach	🇮🇳 India	29.4	Apr 30 °C
31	Anse Georgette	🇸🇨 Seychelles	29.4	Apr 29.9 °C
32	Noppharat Thara Beach	🇹🇭 Thailand	29.4	May 30.3 °C
33	Arthunkal Beach	🇮🇳 India	29.4	Apr 30 °C
34	Anse Beau Vallon	🇸🇨 Seychelles	29.4	Apr 29.8 °C
35	Anse Boudin	🇸🇨 Seychelles	29.4	Apr 29.9 °C
36	Anse Possession	🇸🇨 Seychelles	29.4	Apr 29.9 °C
37	Anse Fourmis	🇸🇨 Seychelles	29.4	Apr 29.9 °C
38	Kappad	🇮🇳 India	29.3	Apr 29.8 °C
39	Kollam Beach	🇮🇳 India	29.3	Apr 29.8 °C
40	Kozhikode Beach	🇮🇳 India	29.3	Apr 29.9 °C
41	Chavakkad Beach	🇮🇳 India	29.3	Apr 29.9 °C
42	Champagne Beach	🇻🇺 Vanuatu	29.3	Feb 29.3 °C
43	Anse Intendance	🇸🇨 Seychelles	29.3	Apr 29.8 °C
44	Port Harcourt Tourist Beach	🇳🇬 Nigeria	29.3	Mar 29.3 °C
45	Valu Beach	🇹🇱 Timor-Leste	29.3	Dec 30.1 °C
46	Rawai	🇹🇭 Thailand	29.3	May 30 °C
47	Pantai Akkarena	🇮🇩 Indonesia	29.3	Apr 29.7 °C
48	Praia Banana	🇸🇹 São Tomé and Príncipe	29.3	Mar 29.3 °C
49	Pantai Indah Modisi	🇮🇩 Indonesia	29.3	Apr 29.6 °C
50	Klong Muang Beach	🇹🇭 Thailand	29.3	May 30.3 °C
51	Tubkaek Beach	🇹🇭 Thailand	29.3	May 30.3 °C
52	Nai Harn beach	🇹🇭 Thailand	29.3	May 30 °C
53	Ya Nui	🇹🇭 Thailand	29.3	May 30 °C
54	Modisi Beach	🇮🇩 Indonesia	29.3	Apr 29.6 °C
55	Patong	🇹🇭 Thailand	29.2	May 29.9 °C
56	Karon Beach	🇹🇭 Thailand	29.2	May 29.9 °C
57	Hat Kata	🇹🇭 Thailand	29.2	May 29.9 °C
58	Shankumugham Beach	🇮🇳 India	29.2	Apr 29.7 °C
59	Muzhappilangad Beach	🇮🇳 India	29.2	Apr 29.8 °C
60	Kamala beach	🇹🇭 Thailand	29.2	May 29.9 °C
61	Ibeno Beach	🇳🇬 Nigeria	29.2	Apr 29.3 °C
62	Kata Noi beach	🇹🇭 Thailand	29.2	May 29.9 °C
63	Ela Beach	🇵🇬 Papua New Guinea	29.2	Jan 29.3 °C
64	Chocas Mar	🇲🇿 Mozambique	29.2	Mar 29.2 °C
65	Bentar Beach	🇮🇩 Indonesia	29.2	Nov 29.9 °C
66	Duta Beach	🇮🇩 Indonesia	29.2	Nov 29.9 °C
67	Bang Thao beach	🇹🇭 Thailand	29.2	May 29.9 °C
68	Meenkunnu Beach	🇮🇳 India	29.2	Apr 29.8 °C
69	Pantai Wayob	🇮🇩 Indonesia	29.2	Apr 29.6 °C
70	Thottada Beach	🇮🇳 India	29.2	Apr 29.8 °C
71	Puthenthope Beach	🇮🇳 India	29.2	Apr 29.7 °C
72	Nai Yang beach	🇹🇭 Thailand	29.2	May 29.9 °C
73	Surin	🇹🇭 Thailand	29.2	May 29.9 °C
74	Banana beach	🇹🇭 Thailand	29.2	May 29.9 °C
75	Bãi Cửa Cạn	🇻🇳 Vietnam	29.2	May 30.5 °C
76	Prek Treng beach	🇰🇭 Cambodia	29.2	May 30.6 °C
77	Hun Sen beach	🇰🇭 Cambodia	29.2	May 30.6 °C
78	Independence beach	🇰🇭 Cambodia	29.2	May 30.6 °C
79	Ochheuteal Beach	🇰🇭 Cambodia	29.2	May 30.6 °C
80	Serendipity Beach	🇰🇭 Cambodia	29.2	May 30.6 °C
81	Nungwi Beach	🇹🇿 Tanzania	29.2	Mar 29.2 °C
82	Wimbe Beach	🇲🇿 Mozambique	29.2	Mar 29.2 °C
83	Playa Las Lajas	🇵🇦 Panama	29.2	Apr 29.4 °C
84	Tambor	🇨🇷 Costa Rica	29.1	Apr 29.4 °C
85	Sai Ri beach	🇹🇭 Thailand	29.1	May 30.2 °C
86	Pantai Widuri	🇮🇩 Indonesia	29.1	May 29.9 °C
87	Praia Inhame	🇸🇹 São Tomé and Príncipe	29.1	Mar 29.1 °C
88	Category:Kemala Beach	🇮🇩 Indonesia	29.1	May 29.5 °C
89	Praia Pesqueira	🇸🇹 São Tomé and Príncipe	29.1	Mar 29.1 °C
90	Kejawanan Beach	🇮🇩 Indonesia	29.1	May 29.9 °C
91	Tambor Beach	🇨🇷 Costa Rica	29.1	Apr 29.4 °C
92	Hawaii beach	🇰🇭 Cambodia	29.1	May 30.5 °C
93	Negombo Beach	🇱🇰 Sri Lanka	29.1	Apr 29.8 °C
94	Ventura Beach	🇱🇰 Sri Lanka	29.1	Apr 29.6 °C
95	Lovina Beach	🇮🇩 Indonesia	29	Apr 29.5 °C
96	Bang Saen	🇹🇭 Thailand	29	May 30.6 °C
97	Pantai Batu Karas	🇮🇩 Indonesia	29	Apr 29.1 °C
98	Balekambang	🇮🇩 Indonesia	29	Apr 29.1 °C
99	Pantai Glagah Indah	🇮🇩 Indonesia	29	Mar 29 °C
100	Eleko Beach	🇳🇬 Nigeria	29	May 29.2 °C

Questions

Where is the sea warmest in March?

Eighty Mile Beach, Australia, at 30.8 °C — the highest March mean among the 2,330 beaches this atlas measures.

How many beaches are warm enough to swim in March?

925 of 2,330 reach 20 °C or more as a monthly mean. Twenty degrees is the line used throughout this atlas, and it is stated rather than implied because a swimming season is an opinion dressed as a number unless the threshold is on the page.

Where do these numbers come from?

NOAA's OISST v2.1 monthly long-term mean for 1991 to 2020, on a 0.25° global grid, sampled at each beach's own coordinates. It is a satellite and buoy record, in the public domain, and nothing on this page is estimated or written by hand.